3v4l.org

run code in 300+ PHP versions simultaneously
<?php function flatten_array($array, $flat = array()) { foreach($array as $k=>$v){ if(!is_array($v)){ while(true){ $i = isset($i) ? $i+1 : 0; $key = "$k$i"; if(!array_key_exists($key, $flat)) break; } $flat[$key] = $v; unset($array[$k]); }else{ $flat = flatten_array($v, $flat); } } return $flat; } $a = array_fill(0, 10, array_fill(0, 10, 0)); $array = flatten_array($a); var_dump($array);

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0090.00618.83
8.3.30.0110.00419.07
8.3.20.0050.00320.21
8.3.10.0060.00321.91
8.3.00.0040.00419.02
8.2.170.0150.00022.96
8.2.160.0080.00622.25
8.2.150.0000.00824.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0080.00418.04
8.2.110.0060.01220.35
8.2.100.0060.00618.22
8.2.90.0040.00419.17
8.2.80.0000.00817.97
8.2.70.0040.00417.63
8.2.60.0080.00018.05
8.2.50.0040.00418.07
8.2.40.0080.00018.16
8.2.30.0000.00819.52
8.2.20.0000.00817.78
8.2.10.0000.00818.06
8.2.00.0040.00417.80
8.1.270.0090.00018.92
8.1.260.0050.00326.35
8.1.250.0090.00028.09
8.1.240.0090.00023.76
8.1.230.0080.00419.15
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0000.00917.23
8.1.190.0040.00417.47
8.1.180.0030.00618.10
8.1.170.0060.00318.67
8.1.160.0040.00421.95
8.1.150.0040.00418.96
8.1.140.0040.00417.55
8.1.130.0040.00417.76
8.1.120.0040.00417.40
8.1.110.0080.00017.46
8.1.100.0000.00817.52
8.1.90.0030.00517.45
8.1.80.0040.00417.49
8.1.70.0040.00417.54
8.1.60.0000.00917.48
8.1.50.0030.01017.41
8.1.40.0060.00317.55
8.1.30.0080.00017.50
8.1.20.0000.00817.52
8.1.10.0050.00317.45
8.1.00.0000.00817.56
8.0.300.0000.00818.77
8.0.290.0050.00316.75
8.0.280.0040.00418.52
8.0.270.0030.00317.28
8.0.260.0000.00618.32
8.0.250.0000.00716.98
8.0.240.0050.00316.95
8.0.230.0040.00417.03
8.0.220.0040.00416.94
8.0.210.0030.00316.85
8.0.200.0050.00317.00
8.0.190.0030.00517.05
8.0.180.0000.00716.89
8.0.170.0030.00616.99
8.0.160.0000.00816.98
8.0.150.0000.00816.94
8.0.140.0110.00016.95
8.0.130.0060.00013.41
8.0.120.0050.00517.03
8.0.110.0000.00716.94
8.0.100.0000.00716.87
8.0.90.0050.00317.01
8.0.80.0120.01216.98
8.0.70.0030.00516.87
8.0.60.0040.00416.90
8.0.50.0030.00516.79
8.0.30.0110.01117.13
8.0.20.0120.01017.40
8.0.10.0050.00316.93
8.0.00.0120.01216.92
7.4.330.0050.00015.03
7.4.320.0000.00616.42
7.4.300.0000.00616.60
7.4.290.0090.00316.46
7.4.280.0030.00716.53
7.4.270.0070.00016.64
7.4.260.0030.00316.63
7.4.250.0040.00416.57
7.4.240.0040.00316.59
7.4.230.0040.00416.71
7.4.220.0060.01316.39
7.4.210.0100.00516.60
7.4.200.0040.00416.65
7.4.160.0000.01916.52
7.4.150.0070.01317.40
7.4.140.0090.01117.86
7.4.130.0090.01216.52
7.4.120.0090.01116.59
7.4.110.0100.01316.43
7.4.100.0110.01116.54
7.4.90.0150.00616.72
7.4.80.0070.01419.39
7.4.70.0100.01016.58
7.4.60.0130.00716.61
7.4.50.0040.00016.65
7.4.40.0090.00816.63
7.4.30.0070.01816.73
7.4.10.0130.00715.18
7.4.00.0070.01014.95
7.3.330.0050.00013.41
7.3.320.0000.00513.46
7.3.310.0000.00716.47
7.3.300.0070.00016.40
7.3.290.0070.00016.40
7.3.280.0090.00816.44
7.3.270.0140.00617.40
7.3.260.0090.01116.70
7.3.250.0170.00416.48
7.3.240.0100.00716.45
7.3.230.0180.00716.46
7.3.210.0100.01016.46
7.3.200.0110.00819.39
7.3.190.0100.01416.44
7.3.180.0080.01116.38
7.3.170.0090.01316.60
7.3.160.0130.00716.63
7.3.130.0040.01115.15
7.3.120.0130.00614.94
7.3.110.0100.01014.92
7.3.100.0070.00714.53
7.3.90.0090.00614.60
7.3.80.0030.01014.93
7.3.70.0040.01114.96
7.3.60.0070.00715.04
7.3.50.0070.00715.07
7.3.40.0000.01214.76
7.3.30.0070.00714.79
7.3.20.0040.00816.72
7.3.10.0000.01516.41
7.3.00.0120.00616.86
7.2.330.0060.02216.84
7.2.320.0100.01316.50
7.2.310.0080.01716.69
7.2.300.0060.01216.67
7.2.290.0130.00616.41
7.2.260.0100.01015.09
7.2.250.0100.00715.24
7.2.240.0030.01314.96
7.2.230.0030.01015.16
7.2.220.0030.00715.05
7.2.210.0060.00915.06
7.2.200.0030.01014.89
7.2.190.0070.00714.96
7.2.180.0080.00815.16
7.2.170.0070.00715.02
7.2.160.0090.00915.00
7.2.150.0040.01117.04
7.2.140.0070.01116.76
7.2.130.0030.01417.03
7.2.120.0130.00317.07
7.2.110.0110.00417.01
7.2.100.0030.00716.72
7.2.90.0060.00917.02
7.2.80.0030.00717.08
7.2.70.0000.01017.12
7.2.60.0050.00616.95
7.2.50.0030.00916.74
7.2.40.0000.01416.88
7.2.30.0060.01017.09
7.2.20.0030.01016.99
7.2.10.0060.00917.00
7.2.00.0070.00918.11
7.1.330.0100.00315.84
7.1.320.0070.00315.75
7.1.310.0070.00415.96
7.1.300.0030.01015.80
7.1.290.0040.01215.76
7.1.280.0070.00315.61
7.1.270.0100.00615.55
7.1.260.0040.01115.59
7.1.250.0070.00415.65
7.1.240.0080.00815.77
7.1.230.0060.00916.01
7.1.220.0070.00315.93
7.1.210.0030.00615.84
7.1.200.0070.00915.71
7.1.190.0030.01115.97
7.1.180.0090.00015.73
7.1.170.0070.00715.93
7.1.160.0070.00615.71
7.1.150.0040.00715.88
7.1.140.0030.01015.74
7.1.130.0160.00016.01
7.1.120.0060.00315.84
7.1.110.0080.00815.64
7.1.100.0050.01017.12
7.1.90.0050.00515.85
7.1.80.0160.00015.89
7.1.70.0070.00816.52
7.1.60.0140.00717.62
7.1.50.0070.00616.48
7.1.40.0080.00615.82
7.1.30.0100.00315.75
7.1.20.0030.00715.62
7.1.10.0000.01415.72
7.1.00.0000.04919.07
7.0.330.0000.01215.29
7.0.320.0040.00815.61
7.0.310.0040.01115.34
7.0.300.0030.00715.60
7.0.290.0030.00615.51
7.0.280.0030.00915.49
7.0.270.0040.01115.27
7.0.260.0110.00015.09
7.0.250.0030.00615.57
7.0.240.0040.01115.61
7.0.230.0040.00415.40
7.0.220.0140.00415.39
7.0.210.0100.00715.55
7.0.200.0130.00615.27
7.0.190.0040.01115.59
7.0.180.0180.00015.44
7.0.170.0080.00615.31
7.0.160.0070.00715.47
7.0.150.0040.01015.21
7.0.140.0030.03018.65
7.0.130.0100.00315.64
7.0.120.0000.00815.38
7.0.110.0100.00015.55
7.0.100.0140.00015.24
7.0.90.0110.00415.37
7.0.80.0000.00915.56
7.0.70.0000.01415.48
7.0.60.0080.02017.72
7.0.50.0100.02316.83
7.0.40.0080.04016.90
7.0.30.0220.02816.71
7.0.20.0150.04116.86
7.0.10.0060.04816.94
7.0.00.0050.05016.81
5.6.400.0160.00314.75
5.6.390.0040.01114.05
5.6.380.0100.00314.71
5.6.370.0070.00714.77
5.6.360.0050.00514.75
5.6.350.0080.00414.44
5.6.340.0100.01014.48
5.6.330.0060.00914.61
5.6.320.0070.01114.32
5.6.310.0060.01214.52
5.6.300.0040.01214.51
5.6.290.0080.00814.35
5.6.280.0100.03717.79
5.6.270.0090.00314.43
5.6.260.0100.00714.48
5.6.250.0000.01314.33
5.6.240.0030.01014.66
5.6.230.0000.01014.56
5.6.220.0060.00614.34
5.6.210.0120.02817.46
5.6.200.0040.02716.35
5.6.190.0030.05217.49
5.6.180.0150.03017.49
5.6.170.0130.04317.52
5.6.160.0080.02717.49
5.6.150.0040.03116.34
5.6.140.0030.04016.31
5.6.130.0060.04016.44
5.6.120.0080.03817.83
5.6.110.0030.04617.82
5.6.100.0150.03017.76
5.6.90.0110.04317.69
5.6.80.0100.03917.33
5.6.70.0090.00614.10
5.6.60.0040.01114.41
5.6.50.0030.01014.22
5.6.40.0070.00714.39
5.6.30.0080.00314.40
5.6.20.0100.00714.56
5.6.10.0040.00814.53
5.6.00.0030.01014.29
5.5.380.0030.01414.45
5.5.370.0050.00514.27
5.5.360.0060.00914.34
5.5.350.0180.02817.40
5.5.340.0080.04116.01
5.5.330.0060.04617.30
5.5.320.0200.02817.24
5.5.310.0230.03017.30
5.5.300.0140.03816.03
5.5.290.0070.02316.25
5.5.280.0100.04317.68
5.5.270.0080.02517.61
5.5.260.0120.04217.58
5.5.250.0110.02117.57
5.5.240.0220.04117.30
5.5.230.0030.01014.48
5.5.220.0030.01014.47
5.5.210.0030.01014.38
5.5.200.0110.00414.06
5.5.190.0090.00014.33
5.5.180.0040.00814.10
5.5.170.0000.01014.44
5.5.160.0030.00914.34
5.5.150.0030.00614.54
5.5.140.0070.00414.42
5.5.130.0110.00013.88
5.5.120.0030.01314.14
5.5.110.0070.01114.43
5.5.100.0040.01114.50
5.5.90.0090.00314.29
5.5.80.0000.01514.14
5.5.70.0030.01014.30
5.5.60.0030.01414.16
5.5.50.0100.00313.91
5.5.40.0000.00914.15
5.5.30.0090.00314.32
5.5.20.0070.01014.11
5.5.10.0100.01013.98
5.5.00.0090.00913.99
5.4.450.0350.03115.84
5.4.440.0370.03815.97
5.4.430.0380.03615.96
5.4.420.0420.02815.86
5.4.410.0690.02915.90
5.4.400.0430.02915.74
5.4.390.0130.02815.56
5.4.380.0180.02315.44
5.4.370.0150.03115.56
5.4.360.0130.02715.55
5.4.350.0120.03115.54
5.4.340.0130.03015.54
5.4.330.0030.00912.34
5.4.320.0100.03215.45
5.4.310.0150.02615.44
5.4.300.0160.02515.44
5.4.290.0120.03015.44
5.4.280.0080.03415.45
5.4.270.0080.03815.59
5.4.260.0150.02915.55
5.4.250.0150.03015.53
5.4.240.0130.02815.58
5.4.230.0100.03115.43
5.4.220.0080.03315.45
5.4.210.0130.02815.40
5.4.200.0180.02514.43
5.4.190.0130.03015.39
5.4.180.0080.03715.40
5.4.170.0130.02815.46
5.4.160.0120.02915.51
5.4.150.0090.03115.55
5.4.140.0130.03314.33
5.4.130.0160.02314.28
5.4.120.0110.02814.34
5.4.110.0120.03514.29
5.4.100.0090.02914.34
5.4.90.0130.02814.39
5.4.80.0130.02514.25
5.4.70.0140.02514.38
5.4.60.0070.03314.27
5.4.50.0090.03014.29
5.4.40.0100.03214.33
5.4.30.0080.02914.32
5.4.20.0150.02414.30
5.4.10.0160.02614.33
5.4.00.0070.02914.02
5.3.290.0070.06314.71
5.3.280.0230.04714.64
5.3.270.0130.05714.83
5.3.260.0030.06714.75
5.3.250.0100.07014.75
5.3.240.0100.06014.84
5.3.230.0170.05314.60
5.3.220.0170.05714.60
5.3.210.0300.04714.61
5.3.200.0200.05714.79
5.3.190.0130.06014.59
5.3.180.0130.06014.73
5.3.170.0200.05314.58
5.3.160.0170.05714.61
5.3.150.0230.04714.71
5.3.140.0130.05714.79
5.3.130.0270.05014.66
5.3.120.0300.04314.67
5.3.110.0130.06014.78
5.3.100.0170.05014.09
5.3.90.0230.04714.02
5.3.80.0200.05014.02
5.3.70.0200.05014.07
5.3.60.0270.04714.04
5.3.50.0200.04714.07
5.3.40.0200.05714.09
5.3.30.0170.05314.03
5.3.20.0170.05313.92
5.3.10.0230.04713.71
5.3.00.0130.05313.79
5.2.170.0170.04011.27
5.2.160.0130.04311.37
5.2.150.0170.05011.27
5.2.140.0100.04311.28
5.2.130.0130.04711.32
5.2.120.0170.03711.16
5.2.110.0130.04311.24
5.2.100.0070.05011.18
5.2.90.0130.04311.27
5.2.80.0230.03711.17
5.2.70.0170.04711.21
5.2.60.0170.03711.09
5.2.50.0200.03711.10
5.2.40.0100.04311.23
5.2.30.0100.04311.20
5.2.20.0100.04311.16
5.2.10.0070.04710.95
5.2.00.0100.04310.86
5.1.60.0130.04310.05
5.1.50.0100.03710.20
5.1.40.0070.04010.17
5.1.30.0100.04010.53
5.1.20.0270.02310.47
5.1.10.0070.04310.19
5.1.00.0070.04010.08
5.0.50.0130.0278.61
5.0.40.0130.0238.55
5.0.30.0000.0578.24
5.0.20.0070.0278.43
5.0.10.0170.0208.24
5.0.00.0070.0438.28
4.4.90.0030.0275.97
4.4.80.0070.0236.02
4.4.70.0030.0275.91
4.4.60.0070.0235.97
4.4.50.0030.0235.95
4.4.40.0070.0375.91
4.4.30.0100.0205.94
4.4.20.0070.0236.04
4.4.10.0030.0275.99
4.4.00.0030.0405.95
4.3.110.0070.0235.89
4.3.100.0100.0175.84
4.3.90.0030.0235.85
4.3.80.0070.0335.83
4.3.70.0070.0205.86
4.3.60.0070.0205.80
4.3.50.0030.0275.82
4.3.40.0100.0305.89
4.3.30.0130.0174.62
4.3.20.0070.0204.66
4.3.10.0000.0274.55
4.3.00.0070.0279.46

preferences:
47.15 ms | 400 KiB | 5 Q